کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7984593 1514793 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of deformation level on microstructure and creep behavior of GH4169 alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Influence of deformation level on microstructure and creep behavior of GH4169 alloy
چکیده انگلیسی
By means of the creep properties measurement and microstructure observation, the influence of the deforming techniques on the microstructure and creep behavior of GH4169 alloy has been investigated. Results show that, compared to the isothermal forged (ITF), the hot continuous rolled (HCR) may increase the deformed quantity of alloy. During HCR, significant amount of dislocations and twinning are activated in the alloy, which is favorable for the multi-systems slipping of dislocation, during creep, for releasing the stress concentration to improve the creep resistance and prolong the creep lifetime of the alloy. In the later period of creep, the micro-cracks are initiated along the grain boundaries vertical to the applied stress axis, and propagated along the grain boundary to occur the cleavage fracture, which is a main mechanism of creep fracture for the alloys prepared by two deformed techniques.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 550, 30 July 2012, Pages 235-242
نویسندگان
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